Ambiguous reference (sometimes called double reference) occurs when there are two possible antecedents for a single PRONOUN. The result, of course, is a lack of clarity.
好 了,那把its改成their,单复数一致了,又会怎样呢?这时句子变成and defined rights and obligations as they were involved in their distribution and consumption,那这个their的意思就是rights‘ and obligations',也不对。